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CD74HCT646E PDF预览

CD74HCT646E

更新时间： 2024-02-04 18:04:41
品牌 Logo 应用领域
德州仪器 - TI 总线收发器触发器逻辑集成电路光电二极管输出元件输入元件
页数 文件大小 规格书
18页 584K
描述
OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

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CD74HCT646E 技术参数

是否Rohs认证：不符合生命周期：Obsolete
Reach Compliance Code：unknown风险等级：5.92
Is Samacsys：N控制类型：INDEPENDENT CONTROL
计数方向：BIDIRECTIONALJESD-30 代码：R-PDSO-G24
JESD-609代码：e0逻辑集成电路类型：REGISTERED BUS TRANSCEIVER
最大I（ol）：0.006 A位数：8
功能数量：1端子数量：24
最高工作温度：85 °C最低工作温度：-40 °C
输出特性：3-STATE输出极性：TRUE
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP24,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE电源：5 V
Prop。Delay @ Nom-Sup：55 ns子类别：Bus Driver/Transceivers
标称供电电压 (Vsup)：5 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
触发器类型：POSITIVE EDGEBase Number Matches：1

CD74HCT646E 数据手册

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CD54HC646, CD74HCT646  
OCTAL BUS TRANSCEIVERS AND REGISTERS  
WITH 3-STATE OUTPUTS  
SCHS278B – APRIL 2003 – REVISED APRIL 2003  
CD54HC646 . . . F PACKAGE  
CD74HCT646 . . . M PACKAGE  
(TOP VIEW)  
2-V to 6-V V  
Operation (CD54HC646)  
CC  
4.5-V to 5.5-V V  
Operation (CD74HCT646)  
CC  
Wide Operating Temperature Range of  
–55°C to 125°C  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
CLKAB  
SAB  
DIR  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
GND  
V
CC  
2
CLKBA  
SBA  
OE  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
Balanced Propagation Delays and  
Transition Times  
3
4
Standard Outputs Drive Up To 15 LS-TTL  
Loads  
5
6
Significant Power Reduction Compared to  
LS-TTL Logic ICs  
7
8
Inputs Are TTL-Voltage Compatible  
(CD74HCT646)  
9
10  
11  
12  
Independent Registers for A and B Buses  
Multiplexed Real-Time and Stored Data  
True Data Paths  
B8  
description/ordering information  
The CD54HC646 and CD74HCT646 consist of bus-transceiver circuits with 3-state outputs, D-type flip-flops,  
and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal  
registers. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate  
clock (CLKAB or CLKBA) input. Figure 1 illustrates the four fundamental bus-management functions that can  
be performed with these devices.  
Output-enable (OE) and direction-control (DIR) inputs control the transceiver functions. In the transceiver  
mode, data present at the high-impedance port can be stored in either or both registers.  
The select-control (SAB and SBA) inputs can multiplex stored and real-time (transparent mode) data. DIR  
determines which bus receives data when OE is active (low). In the isolation mode (OE high), A data can be  
stored in one register and/or B data can be stored in the other register.  
When an output function is disabled, the input function still is enabled and can be used to store data. Only one  
of the two buses, A or B, can be driven at a time.  
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup  
CC  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
ORDERING INFORMATION  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
†
PACKAGE  
T
A
SOIC – M  
CDIP – F  
Tape and reel  
Tube  
CD74HCT646M96 HCT646M  
CD54HC646F3A CD54HC646F3A  
–55°C to 125°C  
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design  
guidelines are available at www.ti.com/sc/package.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2003, Texas Instruments Incorporated  
On products compliant to MIL-PRF-38535, all parameters are tested  
unless otherwise noted. On all other products, production  
processing does not necessarily include testing of all parameters.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...18

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与CD74HCT646E相关器件

型号 品牌 获取价格 描述 数据表
CD74HCT646EN TI

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 		Bus Transceiver
CD74HCT646EN ROCHESTER

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 		HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP24, PACKAGE-24
CD74HCT646EX RENESAS

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 		IC,BUS TRANSCEIVER,SINGLE,8-BIT,HCT-CMOS,DIP,24PIN,PLASTIC
CD74HCT646F ETC

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 		Logic IC
CD74HCT646H ETC

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 		Single 8-bit Bus Transceiver
CD74HCT646M RENESAS

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 		HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
CD74HCT646M ROCHESTER

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 		HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, PACKAGE-24
CD74HCT646M TI

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 		HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, PLASTIC, SOIC-24
CD74HCT646M96 TI

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 		OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
CD74HCT646M96 ROCHESTER

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 		HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, PACKAGE-24

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